<form action="#" class="form-horizontal">
    <div class="control-group">
        <label class="control-label">选择物料</label>
        <div class="controls">
            <select class="span6 chosen chzn-done" data-placeholder="Choose a Category" tabindex="-1" id="selWNF" style="display: none;">
            </select>
            <div id="selWNF_chzn" class="chzn-container chzn-container-single" style="width: 502px;"><a href="javascript:void(0)" class="chzn-single chzn-default" tabindex="-1"><span class="search-input">根据物料名称搜索</span>
                <div><b></b></div>
            </a>
                <div class="chzn-drop" style="left: -9000px; width: 500px; top: 32px;">
                    <div class="chzn-search">
                        <input type="text" autocomplete="off" tabindex="1" style="width: 465px;">
                    </div>
                    <ul class="chzn-results">
                        请输入物料名称
                    </ul>
                </div>
            </div>
        </div>
    </div>
</form>